1.45.6+4.31.4+0.4的巧算

分类: 作业答案 • 2021-12-30 12:44:59

问题描述：

1.4*5.6+4.3*1.4+0.4的巧算

答

1.4*5.6+4.3*1.4+0.4
=1.4*5.6+4.3*1.4+1.4*0.1+0.26
=1.4*(5.6+4.3*+0.1)+0.26
=14.26

1.4*5.6+4.3*1.4+0.4的巧算